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AI security incident: CVE-2025-66580 (NVD)

Incident date: December 19, 2025 | Published: February 14, 2026 | Source: NVD | Classification confidence: 89%

This incident is part of the public archive and includes explicit AI-related signals from the cited source material. Review methodology.

Dive is an open-source MCP Host Desktop Application that enables integration with function-calling LLMs. A critical Stored Cross-Site Scripting (XSS) vulnerability exists in versions prior to 0.11.1 in the Mermaid diagram rendering component. The application allows the execution of arbitrary JavaScript via javascript: . An attacker can exploit this to inject a malicious Model Context Protocol (MCP) server configuration, leading to Remote Code Execution (RCE) on the victim's machine when the node is clicked. Version 0.11.1 fixes the issue.

Why This Is AI-Related

This page is treated as AI-specific because the source material references copilot, which places the issue inside an AI workflow, model, assistant, or supporting dependency rather than a generic software bulletin.

  • copilot

Affected Workflow

Review AI plugins, copilots, model-serving helpers, CLI tools, and automation runtimes that execute system commands.

Likely Attack Path

An attacker can turn the vulnerable AI-adjacent component into a path for command execution on the host or service runtime.

Impact

The issue can create a path to command execution inside an AI-facing product, plugin, copilot, or supporting service runtime. Severity HIGH. Classification confidence 89%. Source channel NVD.

Detection And Triage Signals

  • New shell or process activity from AI-facing services
  • Unexpected outbound connections or file writes after prompt or API activity
  • Privilege changes, container escapes, or suspicious job execution logs

Recommended Response

  • Identify every environment that runs the affected AI plugin, assistant, CLI, or supporting package.
  • Patch or isolate the vulnerable component and remove risky execution permissions while validation is in progress.
  • Review process execution, outbound connections, and file-write logs for signs of post-exploitation activity.

Compliance And Business Impact

Code execution paths create immediate risk of host compromise, credential theft, and downstream lateral movement.

Sources

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